WebSVN - ES - Diff - Rev 7 and 8 - /trunk/src/de/pointedears/converter/app/TemperaturesActivity.java


package de.pointedears.converter.app;

import java.util.HashMap;

import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnKeyListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
import de.pointedears.converter.R;

/**
 * Activity that implements length conversion
 *
 * @author pelinux
 */
public class TemperaturesActivity extends Activity
{
 
 
 
 
  /*
   * Constants for mapping value strings to internal IDs
   */
  private static final String VALUE_CELSIUS = "C"; //$NON-NLS-1$
  private static final String VALUE_FAHRENHEIT = "F"; //$NON-NLS-1$
  private static final String VALUE_KELVIN = "K"; //$NON-NLS-1$
  private static final int ITEM_CELSIUS = 0;
  private static final int ITEM_FAHRENHEIT = 1;
  private static final int ITEM_KELVIN = 2;

  /**
   * Maps value strings to internal IDs
   */
  private final static HashMap<String, Integer> valueToId =
    new HashMap<String, Integer>();

  /* Unit spinners (dropdowns) */
  private Spinner spinnerUnit1;
  private Spinner spinnerUnit2;

  /* Hint that value is off scale */
  private TextView textOffScale;

  static
  {
    TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_CELSIUS,
      TemperaturesActivity.ITEM_CELSIUS);
    TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_FAHRENHEIT,
      TemperaturesActivity.ITEM_FAHRENHEIT);
    TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_KELVIN,
      TemperaturesActivity.ITEM_KELVIN);
  }

  /** Called when the activity is first created. */

  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    this.setContentView(R.layout.activity_temperatures);

    this.textOffScale =
      (TextView) this.findViewById(R.id.temperatures_text_off_scale);

    final EditText editValue1 =
      (EditText) this.findViewById(R.id.temperatures_edit_value1);
    final EditText editValue2 =
      (EditText) this.findViewById(R.id.temperatures_edit_value2);

    final OnKeyListener editValue1OnKey = new OnKeyListener() {
      @Override
      public boolean onKey(View v, int keyCode, KeyEvent event)
      {
        Editable editable1 = ((EditText) v).getText();

        Double value1;
        try
        {
          value1 = Double.parseDouble(editable1.toString());
        }
        catch (NumberFormatException e)
        {
          value1 = null;
        }

        String string2 = ""; //$NON-NLS-1$
        if (value1 != null)
        {
          string2 = TemperaturesActivity.this.getConvertedValue(value1, false);
        }

        editValue2.setText(string2);

        return false;
      }
    };
    editValue1.setOnKeyListener(editValue1OnKey);

    final OnKeyListener editValue2OnKey = new OnKeyListener() {
      @Override
      public boolean onKey(View v, int keyCode, KeyEvent event)
      {
        Editable editable2 = ((EditText) v).getText();

        Double value2;
        try
        {
          value2 = Double.parseDouble(editable2.toString());
        }
        catch (NumberFormatException e)
        {
          value2 = null;
        }

        String string1 = ""; //$NON-NLS-1$
        if (value2 != null)
        {
          string1 = TemperaturesActivity.this.getConvertedValue(value2, true);
        }

        editValue1.setText(string1);

        return false;
      }
    };
    editValue2.setOnKeyListener(editValue2OnKey);

    this.spinnerUnit1 =
      (Spinner) this.findViewById(R.id.temperatures_spinner_unit1);
    this.spinnerUnit2 =
      (Spinner) this.findViewById(R.id.temperatures_spinner_unit2);

    this.spinnerUnit1.setOnItemSelectedListener(new OnItemSelectedListener() {
      @Override
      public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
        long arg3)
      {
        /* Simulate input in second EditText so that first EditText is updated */
        editValue2OnKey.onKey(editValue2, 0, null);
      }

      @Override
      public void onNothingSelected(AdapterView<?> arg0)
      {
        /* no-op */
      }
    });

    this.spinnerUnit2.setSelection(1);
    this.spinnerUnit2.setOnItemSelectedListener(new OnItemSelectedListener() {
      @Override
      public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
        long arg3)
      {
        /* Simulate input in first EditText so that second EditText is updated */
        editValue1OnKey.onKey(editValue1, 0, null);
      }

      @Override
      public void onNothingSelected(AdapterView<?> arg0)
      {
        /* no-op */
      }
    });
  }

  /**
   * @param value
   * @return
   */
  private String getConvertedValue(double value, boolean reverse)
  {
    int selectedItemPosition1 = this.spinnerUnit1.getSelectedItemPosition();
    int selectedItemPosition2 = this.spinnerUnit2.getSelectedItemPosition();
    String[] itemArray =
      this.getResources().getStringArray(R.array.temperature_units_values);
    String selectedItemValue1 = itemArray[selectedItemPosition1];
    String selectedItemValue2 = itemArray[selectedItemPosition2];

    if (reverse)
    {
      String tmp = selectedItemValue1;
      selectedItemValue1 = selectedItemValue2;
      selectedItemValue2 = tmp;
    }

    int itemId1 = TemperaturesActivity.valueToId.get(selectedItemValue1);
    int itemId2 = TemperaturesActivity.valueToId.get(selectedItemValue2);

    Double newValue = value;

    this.textOffScale.setVisibility(View.INVISIBLE);

    switch (itemId1)
    {
      case ITEM_CELSIUS:
        switch (itemId2)
        {
          case ITEM_FAHRENHEIT:
            newValue = new Double(value * 9.0 / 5 + 32);
            break;

          case ITEM_KELVIN:
            newValue = new Double(value + 273.15);

            if (newValue < 0.0)
            {
              this.textOffScale.setVisibility(View.VISIBLE);
              return "*" + newValue.toString();
            }
            break;
        }
        break;

      case ITEM_FAHRENHEIT:
        switch (itemId2)
        {
          case ITEM_CELSIUS:
            newValue = new Double((value - 32) * 5.0 / 9);
            break;

          case ITEM_KELVIN:
            newValue = new Double((value + 459.67) * 5.0 / 9);

            if (newValue < 0.0)
            {
              this.textOffScale.setVisibility(View.VISIBLE);
              return "*" + newValue.toString();
            }
            break;
        }
        break;

      case ITEM_KELVIN:
 
 
 
 
 
        switch (itemId2)
        {
          case ITEM_CELSIUS:
            newValue = new Double(value - 273.15);
            break;

          case ITEM_FAHRENHEIT:
            newValue = new Double(value * 9.0 / 5 - 459.67);
            break;
        }

        if (value < 0.0)
        {
          this.textOffScale.setVisibility(View.VISIBLE);
          return "*" + newValue.toString();
        }
        break;
    }

    return newValue.toString();
  }
}
 

Rev 7	Rev 8
1	package ch.ffhs.converter.app;	1	package de.pointedears.converter.app;
2		2
3	import java.util.HashMap;	3	import java.util.HashMap;
4		4
5	import android.app.Activity;	5	import android.app.Activity;
6	import android.os.Bundle;	6	import android.os.Bundle;
7	import android.text.Editable;	7	import android.text.Editable;
8	import android.view.KeyEvent;	8	import android.view.KeyEvent;
9	import android.view.View;	9	import android.view.View;
10	import android.view.View.OnKeyListener;	10	import android.view.View.OnKeyListener;
11	import android.widget.AdapterView;	11	import android.widget.AdapterView;
12	import android.widget.AdapterView.OnItemSelectedListener;	12	import android.widget.AdapterView.OnItemSelectedListener;
13	import android.widget.EditText;	13	import android.widget.EditText;
14	import android.widget.Spinner;	14	import android.widget.Spinner;
15	import android.widget.TextView;	15	import android.widget.TextView;
16	import ch.ffhs.converter.R;	16	import de.pointedears.converter.R;
17		17
18	/**	18	/**
19	* Activity that implements length conversion	19	* Activity that implements length conversion
20	*	20	*
21	* @author pelinux	21	* @author pelinux
22	*/	22	*/
23	public class TemperaturesActivity extends Activity	23	public class TemperaturesActivity extends Activity
24	{	24	{
25	/**	-
26	*	-
27	*/	-
28	private static final String MSG_BELOW_ABS_ZERO = "K must be >= 0";	-
29	/*	25	/*
30	* Constants for mapping value strings to internal IDs	26	* Constants for mapping value strings to internal IDs
31	*/	27	*/
32	private static final String VALUE_CELSIUS = "C"; //$NON-NLS-1$	28	private static final String VALUE_CELSIUS = "C"; //$NON-NLS-1$
33	private static final String VALUE_FAHRENHEIT = "F"; //$NON-NLS-1$	29	private static final String VALUE_FAHRENHEIT = "F"; //$NON-NLS-1$
34	private static final String VALUE_KELVIN = "K"; //$NON-NLS-1$	30	private static final String VALUE_KELVIN = "K"; //$NON-NLS-1$
35	private static final int ITEM_CELSIUS = 0;	31	private static final int ITEM_CELSIUS = 0;
36	private static final int ITEM_FAHRENHEIT = 1;	32	private static final int ITEM_FAHRENHEIT = 1;
37	private static final int ITEM_KELVIN = 2;	33	private static final int ITEM_KELVIN = 2;
38		34
39	/**	35	/**
40	* Maps value strings to internal IDs	36	* Maps value strings to internal IDs
41	*/	37	*/
42	private final static HashMap<String, Integer> valueToId =	38	private final static HashMap<String, Integer> valueToId =
43	new HashMap<String, Integer>();	39	new HashMap<String, Integer>();
44		40
45	/* Unit spinners (dropdowns) */	41	/* Unit spinners (dropdowns) */
46	private Spinner spinnerUnit1;	42	private Spinner spinnerUnit1;
47	private Spinner spinnerUnit2;	43	private Spinner spinnerUnit2;
48		44
49	/* Hint that value is off scale */	45	/* Hint that value is off scale */
50	private TextView textOffScale;	46	private TextView textOffScale;
51		47
52	static	48	static
53	{	49	{
54	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_CELSIUS,	50	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_CELSIUS,
55	TemperaturesActivity.ITEM_CELSIUS);	51	TemperaturesActivity.ITEM_CELSIUS);
56	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_FAHRENHEIT,	52	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_FAHRENHEIT,
57	TemperaturesActivity.ITEM_FAHRENHEIT);	53	TemperaturesActivity.ITEM_FAHRENHEIT);
58	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_KELVIN,	54	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_KELVIN,
59	TemperaturesActivity.ITEM_KELVIN);	55	TemperaturesActivity.ITEM_KELVIN);
60	}	56	}
61		57
62	/** Called when the activity is first created. */	58	/** Called when the activity is first created. */
63		59
64	@Override	60	@Override
65	public void onCreate(Bundle savedInstanceState)	61	public void onCreate(Bundle savedInstanceState)
66	{	62	{
67	super.onCreate(savedInstanceState);	63	super.onCreate(savedInstanceState);
68	this.setContentView(R.layout.activity_temperatures);	64	this.setContentView(R.layout.activity_temperatures);
69		65
70	this.textOffScale =	66	this.textOffScale =
71	(TextView) this.findViewById(R.id.temperatures_text_off_scale);	67	(TextView) this.findViewById(R.id.temperatures_text_off_scale);
72		68
73	final EditText editValue1 =	69	final EditText editValue1 =
74	(EditText) this.findViewById(R.id.temperatures_edit_value1);	70	(EditText) this.findViewById(R.id.temperatures_edit_value1);
75	final EditText editValue2 =	71	final EditText editValue2 =
76	(EditText) this.findViewById(R.id.temperatures_edit_value2);	72	(EditText) this.findViewById(R.id.temperatures_edit_value2);
77		73
78	final OnKeyListener editValue1OnKey = new OnKeyListener() {	74	final OnKeyListener editValue1OnKey = new OnKeyListener() {
79	@Override	75	@Override
80	public boolean onKey(View v, int keyCode, KeyEvent event)	76	public boolean onKey(View v, int keyCode, KeyEvent event)
81	{	77	{
82	Editable editable1 = ((EditText) v).getText();	78	Editable editable1 = ((EditText) v).getText();
83		79
84	Double value1;	80	Double value1;
85	try	81	try
86	{	82	{
87	value1 = Double.parseDouble(editable1.toString());	83	value1 = Double.parseDouble(editable1.toString());
88	}	84	}
89	catch (NumberFormatException e)	85	catch (NumberFormatException e)
90	{	86	{
91	value1 = null;	87	value1 = null;
92	}	88	}
93		89
94	String string2 = ""; //$NON-NLS-1$	90	String string2 = ""; //$NON-NLS-1$
95	if (value1 != null)	91	if (value1 != null)
96	{	92	{
97	string2 = TemperaturesActivity.this.getConvertedValue(value1, false);	93	string2 = TemperaturesActivity.this.getConvertedValue(value1, false);
98	}	94	}
99		95
100	editValue2.setText(string2);	96	editValue2.setText(string2);
101		97
102	return false;	98	return false;
103	}	99	}
104	};	100	};
105	editValue1.setOnKeyListener(editValue1OnKey);	101	editValue1.setOnKeyListener(editValue1OnKey);
106		102
107	final OnKeyListener editValue2OnKey = new OnKeyListener() {	103	final OnKeyListener editValue2OnKey = new OnKeyListener() {
108	@Override	104	@Override
109	public boolean onKey(View v, int keyCode, KeyEvent event)	105	public boolean onKey(View v, int keyCode, KeyEvent event)
110	{	106	{
111	Editable editable2 = ((EditText) v).getText();	107	Editable editable2 = ((EditText) v).getText();
112		108
113	Double value2;	109	Double value2;
114	try	110	try
115	{	111	{
116	value2 = Double.parseDouble(editable2.toString());	112	value2 = Double.parseDouble(editable2.toString());
117	}	113	}
118	catch (NumberFormatException e)	114	catch (NumberFormatException e)
119	{	115	{
120	value2 = null;	116	value2 = null;
121	}	117	}
122		118
123	String string1 = ""; //$NON-NLS-1$	119	String string1 = ""; //$NON-NLS-1$
124	if (value2 != null)	120	if (value2 != null)
125	{	121	{
126	string1 = TemperaturesActivity.this.getConvertedValue(value2, true);	122	string1 = TemperaturesActivity.this.getConvertedValue(value2, true);
127	}	123	}
128		124
129	editValue1.setText(string1);	125	editValue1.setText(string1);
130		126
131	return false;	127	return false;
132	}	128	}
133	};	129	};
134	editValue2.setOnKeyListener(editValue2OnKey);	130	editValue2.setOnKeyListener(editValue2OnKey);
135		131
136	this.spinnerUnit1 =	132	this.spinnerUnit1 =
137	(Spinner) this.findViewById(R.id.temperatures_spinner_unit1);	133	(Spinner) this.findViewById(R.id.temperatures_spinner_unit1);
138	this.spinnerUnit2 =	134	this.spinnerUnit2 =
139	(Spinner) this.findViewById(R.id.temperatures_spinner_unit2);	135	(Spinner) this.findViewById(R.id.temperatures_spinner_unit2);
140		136
141	this.spinnerUnit1.setOnItemSelectedListener(new OnItemSelectedListener() {	137	this.spinnerUnit1.setOnItemSelectedListener(new OnItemSelectedListener() {
142	@Override	138	@Override
143	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,	139	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
144	long arg3)	140	long arg3)
145	{	141	{
146	/* Simulate input in second EditText so that first EditText is updated */	142	/* Simulate input in second EditText so that first EditText is updated */
147	editValue2OnKey.onKey(editValue2, 0, null);	143	editValue2OnKey.onKey(editValue2, 0, null);
148	}	144	}
149		145
150	@Override	146	@Override
151	public void onNothingSelected(AdapterView<?> arg0)	147	public void onNothingSelected(AdapterView<?> arg0)
152	{	148	{
153	/* no-op */	149	/* no-op */
154	}	150	}
155	});	151	});
156		152
157	this.spinnerUnit2.setSelection(1);	153	this.spinnerUnit2.setSelection(1);
158	this.spinnerUnit2.setOnItemSelectedListener(new OnItemSelectedListener() {	154	this.spinnerUnit2.setOnItemSelectedListener(new OnItemSelectedListener() {
159	@Override	155	@Override
160	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,	156	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
161	long arg3)	157	long arg3)
162	{	158	{
163	/* Simulate input in first EditText so that second EditText is updated */	159	/* Simulate input in first EditText so that second EditText is updated */
164	editValue1OnKey.onKey(editValue1, 0, null);	160	editValue1OnKey.onKey(editValue1, 0, null);
165	}	161	}
166		162
167	@Override	163	@Override
168	public void onNothingSelected(AdapterView<?> arg0)	164	public void onNothingSelected(AdapterView<?> arg0)
169	{	165	{
170	/* no-op */	166	/* no-op */
171	}	167	}
172	});	168	});
173	}	169	}
174		170
175	/**	171	/**
176	* @param value	172	* @param value
177	* @return	173	* @return
178	*/	174	*/
179	private String getConvertedValue(double value, boolean reverse)	175	private String getConvertedValue(double value, boolean reverse)
180	{	176	{
181	int selectedItemPosition1 = this.spinnerUnit1.getSelectedItemPosition();	177	int selectedItemPosition1 = this.spinnerUnit1.getSelectedItemPosition();
182	int selectedItemPosition2 = this.spinnerUnit2.getSelectedItemPosition();	178	int selectedItemPosition2 = this.spinnerUnit2.getSelectedItemPosition();
183	String[] itemArray =	179	String[] itemArray =
184	this.getResources().getStringArray(R.array.temperature_units_values);	180	this.getResources().getStringArray(R.array.temperature_units_values);
185	String selectedItemValue1 = itemArray[selectedItemPosition1];	181	String selectedItemValue1 = itemArray[selectedItemPosition1];
186	String selectedItemValue2 = itemArray[selectedItemPosition2];	182	String selectedItemValue2 = itemArray[selectedItemPosition2];
187		183
188	if (reverse)	184	if (reverse)
189	{	185	{
190	String tmp = selectedItemValue1;	186	String tmp = selectedItemValue1;
191	selectedItemValue1 = selectedItemValue2;	187	selectedItemValue1 = selectedItemValue2;
192	selectedItemValue2 = tmp;	188	selectedItemValue2 = tmp;
193	}	189	}
194		190
195	int itemId1 = TemperaturesActivity.valueToId.get(selectedItemValue1);	191	int itemId1 = TemperaturesActivity.valueToId.get(selectedItemValue1);
196	int itemId2 = TemperaturesActivity.valueToId.get(selectedItemValue2);	192	int itemId2 = TemperaturesActivity.valueToId.get(selectedItemValue2);
197		193
198	Double newValue = value;	194	Double newValue = value;
199		195
200	this.textOffScale.setVisibility(View.INVISIBLE);	196	this.textOffScale.setVisibility(View.INVISIBLE);
201		197
202	switch (itemId1)	198	switch (itemId1)
203	{	199	{
204	case ITEM_CELSIUS:	200	case ITEM_CELSIUS:
205	switch (itemId2)	201	switch (itemId2)
206	{	202	{
207	case ITEM_FAHRENHEIT:	203	case ITEM_FAHRENHEIT:
208	newValue = new Double(value * 9.0 / 5 + 32);	204	newValue = new Double(value * 9.0 / 5 + 32);
209	break;	205	break;
210		206
211	case ITEM_KELVIN:	207	case ITEM_KELVIN:
212	newValue = new Double(value + 273.15);	208	newValue = new Double(value + 273.15);
213		209
214	if (newValue < 0.0)	210	if (newValue < 0.0)
215	{	211	{
216	this.textOffScale.setVisibility(View.VISIBLE);	212	this.textOffScale.setVisibility(View.VISIBLE);
217	return "*" + newValue.toString();	213	return "*" + newValue.toString();
218	}	214	}
219	break;	215	break;
220	}	216	}
221	break;	217	break;
222		218
223	case ITEM_FAHRENHEIT:	219	case ITEM_FAHRENHEIT:
224	switch (itemId2)	220	switch (itemId2)
225	{	221	{
226	case ITEM_CELSIUS:	222	case ITEM_CELSIUS:
227	newValue = new Double((value - 32) * 5.0 / 9);	223	newValue = new Double((value - 32) * 5.0 / 9);
228	break;	224	break;
229		225
230	case ITEM_KELVIN:	226	case ITEM_KELVIN:
231	newValue = new Double((value + 459.67) * 5.0 / 9);	227	newValue = new Double((value + 459.67) * 5.0 / 9);
232		228
233	if (newValue < 0.0)	229	if (newValue < 0.0)
234	{	230	{
235	this.textOffScale.setVisibility(View.VISIBLE);	231	this.textOffScale.setVisibility(View.VISIBLE);
236	return "*" + newValue.toString();	232	return "*" + newValue.toString();
237	}	233	}
238	break;	234	break;
239	}	235	}
240	break;	236	break;
241		237
242	case ITEM_KELVIN:	238	case ITEM_KELVIN:
243	if (value < 0.0)	-
244	{	-
245	return TemperaturesActivity.MSG_BELOW_ABS_ZERO;	-
246	}	-
247		-
248	switch (itemId2)	239	switch (itemId2)
249	{	240	{
250	case ITEM_CELSIUS:	241	case ITEM_CELSIUS:
251	newValue = new Double(value - 273.15);	242	newValue = new Double(value - 273.15);
252	break;	243	break;
253		244
254	case ITEM_FAHRENHEIT:	245	case ITEM_FAHRENHEIT:
255	newValue = new Double(value * 9.0 / 5 - 459.67);	246	newValue = new Double(value * 9.0 / 5 - 459.67);
256	break;	247	break;
257	}	248	}
-		249
-		250	if (value < 0.0)
-		251	{
-		252	this.textOffScale.setVisibility(View.VISIBLE);
-		253	return "*" + newValue.toString();
-		254	}
258	break;	255	break;
259	}	256	}
260		257
261	return newValue.toString();	258	return newValue.toString();
262	}	259	}
263	}	260	}
264		261

Subversion Repositories ES

(root)/trunk/src/de/pointedears/converter/app/TemperaturesActivity.java - Rev 7 → 8